Portable exercise device



FIG. 1 is a top perspective view of a portable exercise device showing my new design;

FIG. 2. is a top plan view thereof;

FIG. 3. is a bottom view thereof;

FIG. 4. is a rear elevation thereof;

FIG. 5. is a front elevation view thereof;

FIG. 6. is a right side elevation view thereof;

FIG. 7. is a left side elevation view thereof;

FIG. 8 is a top perspective view showing the portable exercise device in a partially collapsed position thereof; and,

FIG. 9. is a right perspective view thereof showing the portable exercise device in a fully collapsed position. 

CLAIM The ornamental design a portable exercise device, as shown and described. 